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Finding the Fourth Proportional to 18,984.66, 28,457.55 and 9,607.29

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Solution

The fourth proportional to 18,984.66, 28,457.55 and 9,607.29 is: 14,401.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,984.66 : 28,457.55 = 9,607.29 : x
  2. Step 2: Convert to fraction form
    18,984.66/28,457.55 = 9,607.29/x
  3. Step 3: Cross multiply
    18,984.66x = 28,457.55 × 9,607.29
  4. Step 4: Simplify right side
    18,984.66x = 273,399,935.54
  5. Step 5: Solve for x
    x = 273,399,935.54/18,984.66
  6. Step 6: Final answer
    x = 14,401.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.